For the most part, the presidential hopefuls from both parties have skirted the threat of climate change – instead, lacing their stump speeches with biting criticism of the current U.S. strategy to defeat ISIS. Despite this week’s deadly reminder of the gravity of Islamic extremism in Brussels, scientists argue strongly that the effects of global warming far outweigh terrorist attacks. Science tells us that 2015 was the warmest year on record. On the same day that 31 people died in twin attacks in the Belgian capital, retired NASA scientist James E. Hansen published a paper stating that the catastrophic consequences of greenhouse gas emissions headed our way at a much faster rate than previously predicted. Both Republican candidates Ted Cruz and Donald Trump disregard the growing consensus that global warming is real. Even two Republican mayors in Florida urged both men to stop denying the disaster that awaits the Earth and start coming up with policies to address the crisis. Democrat Hillary Clinton is a believer, but it has been her opponent, Bernie Sanders, who has clearly articulated the dangers of global warming while on the stump.